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LT3471EDD#PBF

LT3471EDD#PBF

Analog Devices
Switching Voltage Regulators 2x 1.3A, 1.2MHz Boost/Inverter in 3 3
NRND2,076 in stock
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Overview

The LT3471 is a dual-channel DC/DC converter capable of high-power boost and inverting configurations, featuring 1.3A switches and a high 1.2MHz switching frequency. It is designed to generate positive and negative supply rails from a single input voltage ranging from 2.1V to 16V, making it ideal for battery-powered systems needing bipolar voltages.

Why Choose This Part

The 1.2MHz switching frequency allows for the use of small, low-profile inductors and capacitors, significantly reducing PCB footprint. With independent soft-start pins for each channel and a wide output range up to +/-40V, it provides high flexibility for complex power sequencing requirements.

Applications

OLED Power Supplies
Provides the precise positive and negative bias voltages required for Organic LED displays.
Digital Camera Power
Generates multiple voltage rails for CCD sensors and internal logic from a Li-ion battery.
TFT-LCD Bias
Acts as a compact dual-rail solution for providing VGL and VGH bias voltages in small displays.
Local Bipolar Supplies
Converts a standard 5V or 12V bus into +/-15V or other bipolar rails for operational amplifiers.

Key Specifications

Function Step-Up, Step-Up/Step-Down
Topology Boost, Cuk, Flyback, SEPIC
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 10-WFDFN Exposed Pad
Current - Output 1.3A
Number of Outputs 2
Output Configuration Positive and Negative (Dual Rail)
Frequency - Switching 1.2MHz
Operating Temperature -40degC ~ 85degC
Synchronous Rectifier No
Voltage - Input (Max) 16V
Voltage - Input (Min) 2.1V
Voltage - Output (Max) +/-40V
Supplier Device Package 10-DFN (3x3)
Voltage - Output (Min/Fixed) +/-1V

Getting Started

Designers should use the DC838A evaluation board to test dual-output boost/inverting configurations. Ensure the exposed pad of the DFN package is soldered to a large ground plane for optimal thermal performance and current handling at the 1.3A limit.